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package client;
import java.awt.Color;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.Socket;
import java.util.Date;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
public class ClientFrame extends JFrame{
private JTextArea allmsg;
private JTextField welcome,copyright,chatmsg;
private JButton send;
private JScrollPane js;
private boolean isConnected = true;
public DataOutputStream out;
public DataInputStream in;
public Socket s = null;
String nic; /* -- 保存用戶昵稱 --*/
/**
* 初始化客戶端資源
* 1.獲取從LoginFrame傳遞過來的參數(shù)
* 2.初始化界面元素
* 3.初始化通信所需要的資源 EG：輸入/輸出流(DataInputStream/DataOutputStream)
* */
public ClientFrame(String name,Socket socket)
{
this.setSize(310,660);
this.setLocation(290,50);
this.setTitle("聊天室客戶端"+name+"");/* -- 指定窗口的標(biāo)題 --*/
this.s = socket;/* -- 接收從LoginFrame中傳遞過來的Socket --*/
this.nic = name+" 說： ";
welcome = new JTextField(" "+name+" 歡迎您來到聊天室 ",100);
welcome.setBackground(Color.blue);
welcome.setEnabled(false);
copyright = new JTextField(" ----- all copyright @ TOP-king -----");
copyright.setEnabled(false);
allmsg = new JTextArea();
allmsg.setEditable(false);
allmsg.append(" 系統(tǒng)消息: 歡迎登錄在線聊天室 \n");
js = new JScrollPane(allmsg);//為JTextArea添加滾動條
chatmsg = new JTextField("在此輸入聊天信息");
chatmsg.addActionListener(new listen());
send = new JButton("發(fā)送");
send.addActionListener(new listen());/* -- 添加事件監(jiān)聽器 --*/
try {
out = new DataOutputStream(s.getOutputStream());
in = new DataInputStream(s.getInputStream());
} catch (IOException e) {JOptionPane.showMessageDialog(null, "系統(tǒng)異常","錯誤",JOptionPane.OK_CANCEL_OPTION);}
addcomponettocontainer();
/* -- 當(dāng)用戶關(guān)閉窗口時進(jìn)行相關(guān)的處理 eg:Socket Data(Input/Output)Stream 的關(guān)閉--*/
this.addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent we)
{
sendmsg("quitlogout");/* -- 向服務(wù)器端發(fā)送關(guān)閉信息 --*/
isConnected = false;
destory();/* -- 銷毀窗口資源 --*/
}
});
new Thread(new linread()).start();/* -- 啟動讀取信息線程 --*/
}
public void addcomponettocontainer()
{
Container c = this.getContentPane();
c.setLayout(null);
welcome.setBounds(75,10,150,20);
js.setBounds(10,50,280,500);
chatmsg.setBounds(10,560,180,30);
send.setBounds(220,560,70,30);
copyright.setBounds(10,600,280,20);
c.add(welcome);
c.add(js);
c.add(chatmsg);
c.add(send);
c.add(copyright);
this.setVisible(true);
this.setResizable(false);
}
class listen implements ActionListener
{
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
if(e.getSource()==send||e.getSource()==chatmsg)
{
String msg = chatmsg.getText().trim();
if("".equals(msg))
{
JOptionPane.showMessageDialog(null,"發(fā)送信息不能為空!","錯誤",JOptionPane.OK_OPTION);
}
else
{sendmsg((new Date()).toLocaleString()+"\n"+nic+msg+"\n");chatmsg.setText("");}
}
}
}
/* -- 向服務(wù)器端發(fā)送信息 --*/
public void sendmsg(String m)
{
if(isConnected)//如果socket的輸出流沒關(guān)閉
{
try {
out.writeUTF(m);
} catch (IOException e) {
JOptionPane.showMessageDialog(null,"發(fā)送信息失敗!(系統(tǒng)異常)","錯誤",JOptionPane.OK_OPTION);
}
}
else
{
JOptionPane.showMessageDialog(null,"發(fā)送信息失敗!(服務(wù)器關(guān)閉/網(wǎng)絡(luò)故障)","錯誤",JOptionPane.OK_OPTION);
}
}
/* -- 讀取信息線程 --*/
class linread implements Runnable
{
public void run()
{
read();
}
public void read()
{
while(isConnected)
{
try {
String msg = in.readUTF();
if("SYSTEM_CLOSED".equals(msg))
{
JOptionPane.showMessageDialog(null,"讀取消息失敗(服務(wù)器關(guān)閉/網(wǎng)絡(luò)故障)！","錯誤",JOptionPane.OK_OPTION);
isConnected = false;
}
else
allmsg.append(msg+"\n");
} catch (IOException e) {
}
}//end while
JOptionPane.showMessageDialog(null,"讀取消息失敗(服務(wù)器關(guān)閉/網(wǎng)絡(luò)故障)！","錯誤",JOptionPane.OK_OPTION);
}//end read()
}
public void destory()
{
try {
this.out.close();
this.in.close();
this.s.close();
} catch (IOException e) {
}
this.dispose();
}
}
======================================================
package client;
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.io.*;
import java.net.*;
public class LoginFrame extends JFrame{
private JTextField name;
private JTextField ip;
private JButton ok,cancle;
public Socket socket;
public LoginFrame()
{
super("登錄框");
this.setSize(400,80);
this.setLocation(100,100);
name = new JTextField("昵稱");
ip = new JTextField("127.0.0.1");
ok = new JButton("登錄");
cancle = new JButton("取消");
ok.addActionListener(new listenEvent());
cancle.addActionListener(new listenEvent());
//建立容器
addcomponettocontainer();
this.setDefaultCloseOperation(EXIT_ON_CLOSE);
}
/**
* 建立容器及控件
*/
public void addcomponettocontainer()
{
Container c = this.getContentPane();
c.setLayout(null);
name.setBounds(10,10,100,30);
ip.setBounds(120,10,100,30);
ok.setBounds(230,10,70,30);
cancle.setBounds(310,10,70,30);
c.add(name);
c.add(ip);
c.add(ok);
c.add(cancle);
this.setVisible(true);
this.setResizable(false);
}
public class listenEvent implements ActionListener
{
public void actionPerformed(ActionEvent event) {
// TODO Auto-generated method stub
if(event.getSource()==ok)
{
String n = name.getText().trim();
String i = ip.getText().trim();
if("".equals(n)||"".equals(i))
{
JOptionPane.showMessageDialog(null,"昵稱、IP不能夠?yàn)榭?","錯誤",JOptionPane.OK_OPTION);
}
else{login(n,i);}
}
if(event.getSource()==cancle)
{
name.setText("");
ip.setText("");
}
}
}
/**
* 進(jìn)行登錄
* @param name
* @param ip
*/
public void login(String name,String ip)
{
try {
socket = new Socket(ip,7777);
DataOutputStream out = new DataOutputStream(socket.getOutputStream());
out.writeUTF(name);
out.flush();//強(qiáng)制輸出緩存中的內(nèi)容
//out.close();
new ClientFrame(name,socket);
destroywindow();
} catch (UnknownHostException e) {
JOptionPane.showMessageDialog(null,"找不到主機(jī)地址(IP錯誤/網(wǎng)絡(luò)故障)！","錯誤",JOptionPane.OK_OPTION);
} catch (IOException e) {
}
}
public void destroywindow()
{
this.dispose();
}
public static void main(String[] args)
{
new LoginFrame();
}
}
==================================================
package server;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.ArrayList;
import java.util.Date;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
public class ServerFrame extends JFrame{
/**
*
*/
private static final long serialVersionUID = 1L;
private JTextArea allmsg;
private JTextField currnum,totalnum,copyright,chatmsg;
private JButton send;
private JScrollPane js;
int num1,num2,port;/* -- num1:當(dāng)前在線人數(shù) num2:總上線人數(shù) port:服務(wù)端口號 --*/
private ServerSocket ss;
ArrayListuser lists;//存放所有在線用戶
public ServerFrame()
{
super("聊天室服務(wù)器端");
this.setSize(310,660);
this.setLocation(200,50);
lists = new ArrayListuser();
num1 = num2 =0;
port = 7777;
currnum = new JTextField(" 當(dāng)前在線人數(shù)： "+num1);
currnum.setEnabled(false);
totalnum = new JTextField(" 上線總?cè)藬?shù)： "+num2);
totalnum.setEnabled(false);
copyright = new JTextField(" ----- all copyright @ TOP-king -----");
copyright.setEnabled(false);
allmsg = new JTextArea();
allmsg.append(" --------------- 系統(tǒng)消息 --------------\n");
allmsg.setEditable(false);
allmsg.setLineWrap(true); //允許自動換行
js = new JScrollPane(allmsg);//為JTextArea添加滾動條
chatmsg = new JTextField("在此輸入系統(tǒng)信息");
chatmsg.addActionListener(new ActionListener(){
@SuppressWarnings("deprecation")
public void actionPerformed(ActionEvent arg0) {
String str = chatmsg.getText().trim();
if(!"".equals(str))
{sendmsg((new Date()).toLocaleString()+" -- 系統(tǒng)消息： "+str);chatmsg.setText("");}
else
JOptionPane.showMessageDialog(null, "消息不能為空","錯誤",JOptionPane.OK_OPTION);
chatmsg.setText("");/* -- 發(fā)送信息后，將輸入欄中的信息清空 -- */
}
});
send = new JButton("發(fā)送");
send.addActionListener(new ActionListener(){
@SuppressWarnings("deprecation")
public void actionPerformed(ActionEvent arg0) {
String str = chatmsg.getText().trim();
if(!"".equals(str))
{sendmsg((new Date()).toLocaleString()+" -- 系統(tǒng)消息： "+str);chatmsg.setText("");}
else
JOptionPane.showMessageDialog(null, "消息不能為空","錯誤",JOptionPane.OK_OPTION);
chatmsg.setText("");/* -- 發(fā)送信息后，將輸入欄中的信息清空 -- */
}
});
//建立容器
addcomponettocontainer();
this.addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent we)
{
sendmsg("SYSTEM_CLOSED");/* -- 向客戶端發(fā)送服務(wù)器關(guān)閉信息 -- */
destory();
}
});
start(); /* -- 啟動連接服務(wù) -- */
}
public void addcomponettocontainer()
{
//Container建立容器
Container c = this.getContentPane();
c.setLayout(null);
currnum.setBounds(20,15,130,20);
totalnum.setBounds(155,15,125,20);
js.setBounds(10,50,280,500);
chatmsg.setBounds(10,560,180,30);
send.setBounds(220,560,70,30);
copyright.setBounds(10,600,280,20);
c.add(currnum);
c.add(totalnum);
c.add(js);
c.add(chatmsg);
c.add(send);
c.add(copyright);
this.setVisible(true);
this.setResizable(false);
}
/**
* start()方法監(jiān)聽客戶的連接
* 并且保存客戶端的相關(guān)信息EG：用戶昵稱、用戶所使用的Socket
* 用戶連接到服務(wù)器成功之后，將其保存到用戶列表中，并為該用戶啟動一個線程用于通信 */
@SuppressWarnings("deprecation")
public void start()
{
boolean isStarted = false;/* -- 用于標(biāo)記服務(wù)器是否已經(jīng)正常啟動 -- */
try {
this.ss = new ServerSocket(port);
isStarted = true;
this.allmsg.append((new Date()).toLocaleString()+" 服務(wù)器啟動 @ 端口: "+port+"\n");
while(isStarted)
{
Socket client = this.ss.accept(); /* -- 監(jiān)聽客戶端的連接 -- */
DataInputStream in = new DataInputStream(client.getInputStream());
String name = in.readUTF();
user u = new user();
u.name = name;
u.socket = client;
lists.add(u); //將該用戶加到列表中去
num1++;
num2++;
currnum.setText(" 當(dāng)前在線人數(shù)： "+num1);
totalnum.setText(" 上線總?cè)藬?shù)： "+num2);
this.allmsg.append((new Date()).toLocaleString()+" : "+u.name+" 登錄 \n");
new Thread(new ClientThread(u)).start();/* -- 為該用戶啟動一個通信線程 -- */
}
} catch (IOException e) {
System.out.println("服務(wù)器已經(jīng)啟動......");
System.exit(0);
}
}
/**
* 通信線程主要功能包括：
* 1.監(jiān)聽客戶端輸入的信息
* 2.將接收到的信息轉(zhuǎn)發(fā)給其他用戶 */
class ClientThread implements Runnable
{
user user = null;
boolean isConnected = true;
DataInputStream dis = null;
DataOutputStream dos = null;
public ClientThread(user u)
{
this.user = u;
try {
this.dis = new DataInputStream(this.user.socket.getInputStream());
this.dos = new DataOutputStream(this.user.socket.getOutputStream());
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public void run()
{
readmsg();
}
/* -- 讀取客戶的聊天信息 -- */
@SuppressWarnings("deprecation")
public void readmsg()
{
while(isConnected)
{
try {
String msg = dis.readUTF();
if("quitlogout".equals(msg))//當(dāng)用戶關(guān)閉客戶端窗口時，發(fā)送quit字符串 表示用戶已經(jīng)退出
{
num1--;
try{
this.dis.close();
this.dos.close();
this.user.socket.close();
this.isConnected = false;
}catch(IOException ioe)
{
ioe.printStackTrace();
}finally{
this.isConnected = false;
if(dis!=null) this.dis.close();
if(dos!=null) this.dos.close();
if(this.user.socket!=null) this.user.socket.close();
}
lists.remove(this.user);//從列表中刪除該用戶
currnum.setText(" 當(dāng)前在線人數(shù)： "+num1);
allmsg.append((new Date()).toLocaleString()+" : "+this.user.name+" 退出\n");
}
else
sendmsg(msg);
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
/* -- 將信息進(jìn)行轉(zhuǎn)發(fā) -- */
public void sendmsg(String msg)
{
user us = new user();
DataOutputStream os = null;
if(lists.size()0)
{
for(int i=0;ilists.size();i++)
{
us = lists.get(i);
try {
os = new DataOutputStream(us.socket.getOutputStream());
os.writeUTF(msg);
} catch (IOException e) {
e.printStackTrace();
}
}
}
else
JOptionPane.showMessageDialog(null, "當(dāng)前無用戶在線。發(fā)送消息失敗","失敗",JOptionPane.OK_OPTION);
}
public void destory()
{
try {
this.ss.close();
} catch (IOException e) {
e.printStackTrace();
}
this.dispose();
}
public static void main(String[] args)
{
new ServerFrame();
}
}
=================================================
package server;
import java.net.*;
public class user {
String name;
Socket socket;
}
暈，貌似這個問題以前有人提過，我也回答過了，不滿意嗎？需要用到j(luò)avamail的jar包，網(wǎng)上有。找不到把郵箱貼出來，我發(fā)給你。package test.servlet;import java.io.IOException;
import java.io.PrintWriter;
import java.util.Date;
import java.util.Properties;import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;public class SendMailServlet extends HttpServlet {
/**
*
*/
private static final long serialVersionUID = 2960000940515881314L;
private ServletConfig config = null;
private static final String CONTENT_TYPE = "text/html";public void init(ServletConfig config1) throws ServletException {
this.config = config1;
}final public ServletConfig getServletConfig() {
return config;
}/**
* Constructor of the object.
*/
public SendMailServlet() {
super();
}/**
* Destruction of the servlet.
*/
public void destroy() {
super.destroy();
}/**
* The doGet method of the servlet.
*
* This method is called when a form has its tag value method equals to get.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doPost(request,response);
}/**
* The doPost method of the servlet.
*
* This method is called when a form has its tag value method equals to post.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String to_mail=codeToString(request.getParameter("to"));
String to_title=codeToString(request.getParameter("title"));
String to_content=codeToString(request.getParameter("content"));
Properties props=new Properties();//也可用Properties props = System.getProperties(); //
props.put("mail.smtp.host","localhost");//存儲發(fā)送郵件服務(wù)器的信息
props.put("mail.smtp.auth","true");//同時通過驗(yàn)證
Session s=Session.getInstance(props);//根據(jù)屬性新建一個郵件會話
s.setDebug(true);//由郵件會話新建一個消息對象
MimeMessage message=new MimeMessage(s);//由郵件會話新建一個消息對象//設(shè)置郵件
InternetAddress from;
try {
from = new InternetAddress("06254054@bjtu.mail.com");
message.setFrom(from);//設(shè)置發(fā)件人
InternetAddress to=new InternetAddress(to_mail);
message.setRecipient(Message.RecipientType.TO,to);//設(shè)置收件人,并設(shè)置其接收類型為TO
message.setSubject(to_title);//設(shè)置主題
message.setText(to_content);//設(shè)置信件內(nèi)容
message.setSentDate(new Date());//設(shè)置發(fā)信時間
//發(fā)送郵件
message.saveChanges();//存儲郵件信息
Transport transport=s.getTransport("smtp");
//以smtp方式登錄郵箱,第一個參數(shù)是發(fā)送郵件用的郵件服務(wù)器SMTP地址,第二個參數(shù)為用戶名,第三個參數(shù)為密碼
transport.connect("localhost",8479,"","");
transport.sendMessage(message,message.getAllRecipients());//發(fā)送郵件,其中第二個參數(shù)是所有已設(shè)好的收件人地址
transport.close();
response.setContentType(CONTENT_TYPE);
PrintWriter out = response.getWriter();
out.print("success");
} catch (AddressException e) {
e.printStackTrace();
} catch (MessagingException e) {
e.printStackTrace();
}}
public String codeToString(String str) {//處理中文字符串的函數(shù)
String s=str;
try {
byte tempB[]=s.getBytes("ISO-8859-1");
s=new String(tempB);
return s;
} catch(Exception e) {
return s;
}
}
}
一個簡單的聊天程序
參考一下；
//客戶端的
import java.io.*;
import java.net.*;
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
public class ChatClient {
public static void main(String[] args) {
ChatClient cc=new ChatClient();
cc.receive();
}
JTextField jtf;
JTextArea jta;
Socket s;
PrintWriter out;
BufferedReader in;
public ChatClient(){
JFrame frame=new JFrame("ChatClient");
frame.setSize(400,300);
jta=new JTextArea();
jta.setEditable(false);
jtf=new JTextField();
jtf.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent arg0) {
send();
}
});
frame.getContentPane().add(new JScrollPane(jta));
frame.getContentPane().add(jtf,"South");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
try {
s=new Socket("127.0.0.1",9000);
in=new BufferedReader(new InputStreamReader(s.getInputStream()));
out=new PrintWriter(s.getOutputStream());
} catch (UnknownHostException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public void receive(){
while(true){
try {
String text=in.readLine();
this.jta.append(text+"\n");
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
return;
}
}
}
public void send(){
String text=this.jtf.getText();
this.jtf.setText("");
out.println(text);
out.flush();
}
}
//服務(wù)器端的
import java.net.*;
import java.io.*;
import java.util.*;
public class ChatServer {
public static void main(String[] args) throws Exception {
ServerSocket ss=new ServerSocket(9000);
List list=new ArrayList();
while(true){
Socket s=ss.accept();
list.add(s);
Thread t=new ServerThread(s,list);
t.start();
}
}
}
class ServerThread extends Thread{
Socket s;
List list;
BufferedReader in;
PrintWriter out;
public ServerThread(Socket s, List list) {
this.s = s;
this.list = list;
try {
in=new BufferedReader(new InputStreamReader(s.getInputStream()));
out=new PrintWriter(s.getOutputStream());
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public void run(){
while(true){
try {
String str=in.readLine();
if (str==null) return;
Iterator it=list.iterator();
while(it.hasNext()){
Socket socket=(Socket)(it.next());
PrintWriter o=new PrintWriter(socket.getOutputStream());
o.println(str);
o.flush();
}
} catch (IOException e) {
// TODO Auto-generated catch block
//e.printStackTrace();
return;
}
}
}
}
【ClientSocketDemo.java 客戶端Java源代碼】
import java.net.*;
import java.io.*;
public class ClientSocketDemo
{
//聲明客戶端Socket對象socket
Socket socket = null;
//聲明客戶器端數(shù)據(jù)輸入輸出流
DataInputStream in;
DataOutputStream out;
//聲明字符串?dāng)?shù)組對象response，用于存儲從服務(wù)器接收到的信息
String response[];
//執(zhí)行過程中，沒有參數(shù)時的構(gòu)造方法，本地服務(wù)器在本地，取默認(rèn)端口10745
public ClientSocketDemo()
{
try
{
//創(chuàng)建客戶端socket，服務(wù)器地址取本地，端口號為10745
socket = new Socket("localhost",10745);
//創(chuàng)建客戶端數(shù)據(jù)輸入輸出流，用于對服務(wù)器端發(fā)送或接收數(shù)據(jù)
in = new DataInputStream(socket.getInputStream());
out = new DataOutputStream(socket.getOutputStream());
//獲取客戶端地址及端口號
String ip = String.valueOf(socket.getLocalAddress());
String port = String.valueOf(socket.getLocalPort());
//向服務(wù)器發(fā)送數(shù)據(jù)
out.writeUTF("Hello Server.This connection is from client.");
out.writeUTF(ip);
out.writeUTF(port);
//從服務(wù)器接收數(shù)據(jù)
response = new String[3];
for (int i = 0; i response.length; i++)
{
response[i] = in.readUTF();
System.out.println(response[i]);
}
}
catch(UnknownHostException e){e.printStackTrace();}
catch(IOException e){e.printStackTrace();}
}
//執(zhí)行過程中，有一個參數(shù)時的構(gòu)造方法，參數(shù)指定服務(wù)器地址，取默認(rèn)端口10745
public ClientSocketDemo(String hostname)
{
try
{
//創(chuàng)建客戶端socket，hostname參數(shù)指定服務(wù)器地址，端口號為10745
socket = new Socket(hostname,10745);
in = new DataInputStream(socket.getInputStream());
out = new DataOutputStream(socket.getOutputStream());
String ip = String.valueOf(socket.getLocalAddress());
String port = String.valueOf(socket.getLocalPort());
out.writeUTF("Hello Server.This connection is from client.");
out.writeUTF(ip);
out.writeUTF(port);
response = new String[3];
for (int i = 0; i response.length; i++)
{
response[i] = in.readUTF();
System.out.println(response[i]);
}
}
catch(UnknownHostException e){e.printStackTrace();}
catch(IOException e){e.printStackTrace();}
}
//執(zhí)行過程中，有兩個個參數(shù)時的構(gòu)造方法，第一個參數(shù)hostname指定服務(wù)器地址
//第一個參數(shù)serverPort指定服務(wù)器端口號
public ClientSocketDemo(String hostname,String serverPort)
{
try
{
socket = new Socket(hostname,Integer.parseInt(serverPort));
in = new DataInputStream(socket.getInputStream());
out = new DataOutputStream(socket.getOutputStream());
String ip = String.valueOf(socket.getLocalAddress());
String port = String.valueOf(socket.getLocalPort());
out.writeUTF("Hello Server.This connection is from client.");
out.writeUTF(ip);
out.writeUTF(port);
response = new String[3];
for (int i = 0; i response.length; i++)
{
response[i] = in.readUTF();
System.out.println(response[i]);
}
}
catch(UnknownHostException e){e.printStackTrace();}
catch(IOException e){e.printStackTrace();}
}
public static void main(String[] args)
{
String comd[] = args;
if(comd.length == 0)
{
System.out.println("Use localhost(127.0.0.1) and default port");
ClientSocketDemo demo = new ClientSocketDemo();
}
else if(comd.length == 1)
{
System.out.println("Use default port");
ClientSocketDemo demo = new ClientSocketDemo(args[0]);
}
else if(comd.length == 2)
{
System.out.println("Hostname and port are named by user");
ClientSocketDemo demo = new ClientSocketDemo(args[0],args[1]);
}
else System.out.println("ERROR");
}
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
【ServerSocketDemo.java 服務(wù)器端Java源代碼】
import java.net.*;
import java.io.*;
public class ServerSocketDemo
{
//聲明ServerSocket類對象
ServerSocket serverSocket;
//聲明并初始化服務(wù)器端監(jiān)聽端口號常量
public static final int PORT = 10745;
//聲明服務(wù)器端數(shù)據(jù)輸入輸出流
DataInputStream in;
DataOutputStream out;
//聲明InetAddress類對象ip，用于獲取服務(wù)器地址及端口號等信息
InetAddress ip = null;
//聲明字符串?dāng)?shù)組對象request，用于存儲從客戶端發(fā)送來的信息
String request[];
public ServerSocketDemo()
{
request = new String[3]; //初始化字符串?dāng)?shù)組
try
{
//獲取本地服務(wù)器地址信息
ip = InetAddress.getLocalHost();
//以PORT為服務(wù)端口號，創(chuàng)建serverSocket對象以監(jiān)聽該端口上的連接
serverSocket = new ServerSocket(PORT);
//創(chuàng)建Socket類的對象socket，用于保存連接到服務(wù)器的客戶端socket對象
Socket socket = serverSocket.accept();
System.out.println("This is server:"+String.valueOf(ip)+PORT);
//創(chuàng)建服務(wù)器端數(shù)據(jù)輸入輸出流，用于對客戶端接收或發(fā)送數(shù)據(jù)
in = new DataInputStream(socket.getInputStream());
out = new DataOutputStream(socket.getOutputStream());
//接收客戶端發(fā)送來的數(shù)據(jù)信息，并顯示
request[0] = in.readUTF();
request[1] = in.readUTF();
request[2] = in.readUTF();
System.out.println("Received messages form client is:");
System.out.println(request[0]);
System.out.println(request[1]);
System.out.println(request[2]);
//向客戶端發(fā)送數(shù)據(jù)
out.writeUTF("Hello client!");
out.writeUTF("Your ip is:"+request[1]);
out.writeUTF("Your port is:"+request[2]);
}
catch(IOException e){e.printStackTrace();}
}
public static void main(String[] args)
{
ServerSocketDemo demo = new ServerSocketDemo();
}
}
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